package com.yc.exam;


import org.springframework.web.WebApplicationInitializer;
import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
import org.springframework.web.servlet.DispatcherServlet;

import javax.servlet.MultipartConfigElement;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRegistration;

//web.xml
public class WebConfig implements WebApplicationInitializer {

    @Override
    public void onStartup(ServletContext servletContext) throws ServletException {
        //加载spring配置
        AnnotationConfigWebApplicationContext context = new AnnotationConfigWebApplicationContext();
        context.register(MvcConfig.class);
        //注册转发器servlet
        DispatcherServlet servlet = new DispatcherServlet(context);
        ServletRegistration.Dynamic registration = servletContext.addServlet("app", servlet);
        //设置服务器在启动时加载  DispatcherServlet
        registration.setLoadOnStartup(1);
        //转发全部请求，必须配置响应地址为:/
        registration.addMapping("/");

        //文件上传参数配置
        MultipartConfigElement mc = new MultipartConfigElement("/",
                1024 * 1024 * 2, 1024 * 1024 * 10, 1024 * 1024 * 5);
        registration.setMultipartConfig(mc);
    }
}
